Armature for dynamo-electric machines.



No. 650,246. Pagnted May 22, |900.

ABMATUHE FR DYNAMO` ELECT'FIGl MACHINES.

afuem'EL.

(Appucmon mod sept. 1s, 1899.)

UNITED STATES PATENT OFFICE.

GUs'rnvos unioni., on sr. Louis, Missonnr.

ARMATURE FOR DYNAMo-ELECTRIC MACHINe.

SPEGIFICATION forming part of Letters Patent No. 650,246, dated May 22,190,0.

Application led September 18,1899. Serial No.'730,800. (No model.)

To @ZZ whom it may concern:

Be it known that I, GUsTAvos IEDEL, a citizen of the United States,residing at the city of St. Louis, in the State of Missouri, haveinvented certain new and useful Imd provements in Armatures forDynamo-Electric Machines or Motors, of which the follow-1 ing is a full,clear, and exact description, reference being had to the accompanyingdrawings, forming part of lthis specification.

My invention relates to an armature having a plurality of removablecore-sections eX- tending longitudinally of the armature-shaft, cachwound separately and having the ends of the windingcoils of eachindividual section connected independently to the commutator.

The object of this invention is to provide an armature which will not beincapacitated by the burning out or otherwise-disabled condition, but inwhich when a wire has burned out or become otherwise disabled thesection to which said wire belongs may be cut out of circuit withoutaffecting the other sections, thereby permittin ga continuedserviceability of the armature in a merely weakened condition owing tothe disability of the section affected.

My invention consists in features of novelty hereinafter fullydescribed, and pointed out in the claim.

Figure I is a perspective view of one of the section-cores of myimproved armature. Fig. II is a longitudinal sectional view of thearmature, showing two of the core-sections in elevation and thewinding-coils thereof partly in section and partly in elevation. Fig.III is a view, partly in end elevation and partly in cross-section,through the armature. Fig. IV is an enlarged view, partly in elevationand partly in crosssecton, of the commutator. Fig. V is a view, partlyin section and partly in elevation, of a double armature.

1 designates the armature shaft, provided with a sleeve 2, on which thecommutator-sections 8 are mounted. The commutator-sections 3 areseparated from the sleeve 2 and from each other by insulating materialeand are adapted to receive the contact of the brushes A. Eachcon1mutatorsection is provided with an arm 5, grooved at its outer end,as seen in Fig. IV. On each arm 5 is a cap 6, secured by means of ascrew or other suitL able means. A Each cap 6 is provided with twogrooves corresponding to the opposing grooves contained by the arms 5,thereby producing apertures for the reception of the terminals of thearmature winding wires 8, which are held in place between the caps andthe c ommutator-arms.

9 and 10 designate collars fixed to the shaft l. 11 designatescore-sections on which the coil of armature-winding wire is wound, eachcore being provided with its individual winding. These coreesections aretapering at their inner edges, (see Fig. IIL) and they are removablyheld to the armature-shaft by screws 12, that pass through arms 13 atthe ends of the core-sections into the collars 9 and 10. The screws l2are held from displacement by rings 14, that encircle the arms 13 andprevent the screws from breaking loose.

Each coil-section is formed with a contacting face 15 and an overhangingflange 16, be-` tween which and the arms 13 the coil of winding-wire 8is wrapped. One of the terminals of each individual winding-coil wrappedon a core-section leads to the directly-opposing arm 5 of acommutator-seotion, and the other terminal leads to the next succeedingcommutator-arm, and the same connection is coutinued throughout thearmature, so as to connect all of the coils with the commutator inseries. Should a Wire of either of the armature sections become disabledby being burned out or broken or otherwise, the said section is out outof connection with the other sections by using a short yoke-wire, suchas is illustrated in dotted lines in Fig. IV, the ends of which areconnected to the commutator-arins desired to be connected together,thereby forming a circuit between the remaining serviceable armaturesections, so that the operation of the armature may be continued eventhough theinterposed section has become dead and of no utility.

In Fig. V, I have shown adouble armature of approximately the sameconstruction as that shown in Figs. I to IV, inclusive, with theexception that two commutators are used instead of a single commutator.The parts of the double armature are designated by the same numerals asthe parts heretofore dc scribed, with the addition of an aifx a IOOserted to connect the adjacent sections, in

which event it is desirable to remove a section diametrically oppositein order to balance the armature and connect the sections adjacent by asecond yoke-Wire. The armature is thereby rendered similar in appear?ance to the Well-known shuttle-armature.

I claim as my invention- An armature comprising a shaft, a series of zocore-sections, collars on said shaft to which said core-sections areremovably secured, rings surrounding the ends of said sections, coilsWrapped on said sections, a commutator, and means whereby the terminalsof said coils are removably secured to said commutator, substantially asdescribed.

GUSTAVOS IIEIDEL.

In presence of E. S. KNIGHT, M. P. SMITH,

